Roller side bearing for cars.



E. W. WEBB. ROLLER SIDE BEARING FOR CARS.

APPLICATION FILED SEPT-2|; I9I4. I 1L,%9;%7 Patented $ept. 11, 191?.

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UNITED @TATEO PATENT OFFIQE.

EDWIN W. WEBB, OF CHICAGO, ILLINOIS, ASSIGNOR TO STANDARD CAR TRUCK COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF NEW JERSEY.

ROLLER SIDE BEARING- FOR CARS.

Application filed September 21, 1914.

To all whom it may concern:

Be it known that I, EDWIN W. VEBB, cit1- zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and use ful Improvements in Roller Side Bearings for Cars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved roller side bearing for car trucks, of the type wherein the car trucks have a radial motion in respect to the car body; and the present invention is in the nature of an improvement on the roller bearing disclosed and claimed in the prior patent to John C. Barber, No. 987,422, of date March 21, 1911.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings Figure 1 is a plan view of the improved bearing, with the upper roller bearing plate or member removed;

Fig. 2 is a vertical section, taken through the bearing approximately on the line 00 m of Fig. 1;

Fig. 3 is a side elevation of the bearing, with some parts sectioned on the line 03 m of Fig. 2;

Fig. 4: is a plan View of the roller bearing cage, with some of the rollers in position and some removed;

Fig. 5 is a plan view of the lower roller bearing plate or member;

Fig. 6 is a plan view of the upper roller bearing plate or member;

Fig. 7 is a section taken on the line at w" of Fig. 4; and

Fig. 8 is a side elevation of the parts shown in Fig. 4.

The numerals 1 and 2 indicate, respectively, the upper and lower bearlng plates, between which the rollers 3 are interposed. To secure the best results in car construction, wherein the rollers are radially disposed, said rollers are arranged in two concentric series, and these sets of rollers are properly spaced and properly positioned between the upper and lower bearing plates,

Specification of Letters Patent.

Patented Sept. 11, 1917..

Serial No. 862,744.

by a so-called roller spacing cage, made up of two flat plates 4: placed face to face and, as shown, rigidly connected, at their ends, by rivets 5. Both the upper and lower plates l: have openings in which the rollers are seated, and, at the longitudinal edges of these openings, the said plates are provided with upwardly and downwardly extended segmental roller-retaining flanges 6. The roller-retaining flanges 6 terminate, at their edges, at such points that they do not engage either the upper bearing plate 1 or the lower plate 2, but nevertheless loosely hold the rollers interlocked and the cage plates, properly spaced apart and free from rotation, under frictional engagement of said upper and lower bearing plates.

In the roller bearing of the prior Patent 987,422, above identified, to keep the rollers always in proper relative position, in respect to the bearing plates 1-9., a toothed wheel or pinion was journa-led to the roller cage and arranged for engagement with upper and lower segmental rows of rack teeth formed onthe upper and lower surfaces of the said bearing plates 1-2. The said arrangement, while an improvement over the prior art, was not, in all respects, completely satisfactory. The pinion, being at the center of the bearing plates and cage, did not positively and independently move the inner and outer edges of the roller cage, and it was found that dirt would, under certain conditions, accumulate in the rack teeth and interfere with movements of the pinion.

In my present invention, I remove the above notedresults, and, at the same time, retain all the good features of the prior construction, by employing two pinions 7, which are set into recesses formed, one in the inner, and the other in the outer central edge portions 4* of the cage-forming plates 4. Furthermore, these pinions 7 are formed with trunnions that are journaled in seats formed by bulging adjacent portions of the said cage-forming plates. These trunnions 7 mesh with rack teeth 8 formed on the inner and outer edge portions of the bearing plates 1-2. The upper rack teeth 8 are open at their outer sides, but the lower bearing plate 2 is provided with inner and outer extensions 2 that project beyond the lower rack teeth 8, and to which are riveted, or otherwise rigidly seeured,retain1n, brackets 9, the hook-like upper ends of whichoverlap the adjacent edges of the upper bearing plate 1, and hold the said plates 1-2 against accidental separation, while permitting the .free traveling movement of the one in respect to the other.

To give dirt a chance to crowd or Work itself out of the spaces between the lower rack teeth 8, the plate extensions 2 are said upper and lower bearing plates. Otherwise stated, the rollers cannot work or crowd in one direction or the other, so that they will not occupy medial positions, in re spectto the said upper and lower bearing plates.

What claim is 1. The combination with upper and lower roller bearing plates, interposed rollers and acage therefor, of independently rotatable pinions journaled on the cage, said upper .and lower platesrhaving at their inner and outer edges rack teeth. meshing with the pinions, said edges ofthe lower roller bearing plateterminating at the outer ends of-the raek,teeth;formed therein to permit the escape of dirt thereover.

' 2. :The combination with upper. and lower roller bearing plates having on their opposing faces laterally spaced flanges and rack teeth located outward thereof, of rollers interposed between said plates and held by the flanges thereof against axial movement,

Copies ofthi spa tent may hepbta ined for rollers interposed between said plates and held by the flanges thereof against axial movement, a cage for the rollers, and a pair of axially alined independently rotatable pinions journaled on the cage and meshing with the rack teeth.

.4. The combination with upper and lower .roller bearing plates and interposed rollers,

said plates having on their outer and inner edges rack teeth, of a cage for the rollers,

and. a pair of axially alined pinions jour- ,naled on the cage, held thereby against axial movementand meshing with the rack teeth, said p nions holding the cage in a .i nedial position in respect to said plates, said edges of the lowerroller bearing plate terminating at the outer. ends of the rack teeth formed therein to permit the escape of dirt there- ,over. 7

5. The combination with upperand lower roller bearing plates, interposed rollers and a cage. therefor, of meansgfor causing the cage to maintain a vmedialposition in respect to said plates, rack teeth formed on the outer and inner edges of saidplates, pinions j ournaled on the cage and meshingwith the rack teeth, and brackets on one of .said plates overlapping the other ,thereof 7 and holding said plates against accidental separation and arranged to permit the pinions to travel thereunder.

In testimony whereof 1i afiix my signature in presence of two witnesses. V

EDWIN W. WEBB. Witnesses:

BARBER, .C HAs. S. WALTON.

five cents each, ,hyeddressingthe commissioner ofPaten-ts, Washington, 13, CL 

